CN104579165B - A kind of on-the-spot test method of photovoltaic plant dynamic reactive response performance - Google Patents
A kind of on-the-spot test method of photovoltaic plant dynamic reactive response performance Download PDFInfo
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- CN104579165B CN104579165B CN201510031603.2A CN201510031603A CN104579165B CN 104579165 B CN104579165 B CN 104579165B CN 201510031603 A CN201510031603 A CN 201510031603A CN 104579165 B CN104579165 B CN 104579165B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The present invention relates to a kind of on-the-spot test method of photovoltaic plant dynamic reactive response performance, test point is selected at photovoltaic electric station grid connection point；Busbar voltage variation is realized by adjusting main transformer tap in the photovoltaic plant；The method is：Measure the output of photovoltaic plant active power and reactive power；Confirm detection device；Adjustment has load transformer tapping so that grid entry point voltage should meet voltage deviation requirement；The current plant active power of output that record illumination is maintained at 400 watts/square metre is P0；Setting photovoltaic plant is operated under terminal voltage control mode；Adjusting has load transformer tapping, observes the idle action in power station；Test result is analyzed, photovoltaic plant dynamic response performance index is calculated.When the present invention solves photovoltaic plant dynamic reactive response measurement, the problem that test device capacity is limited and modeling test method is excessively complicated, perfect current photovoltaic plant station level reactive response aptitude tests method system.
Description
Technical field：
The present invention relates to a kind of on-the-spot test methods of photovoltaic plant dynamic reactive response performance, are more particularly to a kind of profit
The on-the-spot test side of photovoltaic plant dynamic reactive response performance is carried out with station level on-load voltage regulation change and power station AVC system coordinations cooperation
Method.
Background technology：
When photovoltaic electric station grid connection point voltage occurs compared with large disturbances, voltage magnitude drops to 90%Un~0%UnWhen, photovoltaic is inverse
Become device to need with low voltage ride-through capability, and it is desirable that photovoltaic plant can carry out rapidly reactive response, compensates corresponding nothing
Work(electric current realizes grid entry point voltage support ability.Currently, the dynamic reactive during national and foreign standards are directed to low voltage crossing is rung
It should be made that regulation.Under accidental conditions, due to being influenced by solar irradiation strength fluctuation, unstability etc., photovoltaic electric
Output-power fluctuation of standing is larger.With the increase of photovoltaic plant access capacity, output-power fluctuation causes line voltage distribution to transfinite
The phenomenon that gradually aggravate, it is desirable to photo-voltaic power generation station has the ability that conventional capability adjusts voltage, maintains grid-connected to press stabilization.
In photovoltaic plant in addition to concentrating the static passive compensation device or dynamic reactive compensation device that install additional, photovoltaic DC-to-AC converter
Also there is Reactive-power control ability.Photovoltaic plant powerless control system block diagram is as shown in Fig. 1, be commonly divided into it is idle adjust layer and
Idle Distribution Layer.Wherein, upper layer (adjusting layer) according to grid entry point low-pressure side deviation adaptive setting power grid to the idle of photovoltaic plant
Demand, and the reactive requirement adjusted is verified according to the operation of photovoltaic plant constraint, finally provide rational reactive requirement
Value, additionally it is possible to directly receive the reactive power regulating command of dispatching down distributing；Lower layer's (Distribution Layer) is according to photovoltaic generation unit
Operation constraint and actual motion state, according to certain distribution principle, the reactive requirement value calculated upper layer is allocated, and is passed through
Cross Reactive-power control target instruction target word of the output as photovoltaic generation unit after verifying.Therefore plant stand grade reactive-load compensation configuring condition is opposite
Complexity need to formulate testing conditions, the detection method of detailed reactive power support ability, the true idle branch of correct response photovoltaic plant
Support ability.
GB/T 29321-2012《Photo-voltaic power generation station reactive power compensation technology provides》In when being responded to photovoltaic plant dynamic reactive
Between be defined, i.e. photo-voltaic power generation station dynamic reactive response time (response time of PV station dynamic
Reactive power) refer to photo-voltaic power generation station since increasing grid entry point electric voltage exception or reduces and reaches triggering setting value,
Until photo-voltaic power generation station grid entry point reactive power reality output variable quantity (difference of desired value and initial value) reaches variable quantity target
Time needed for the 90% of value.It is required that the reactive power source of photo-voltaic power generation station should be able to track the fluctuation quick response of photovoltaic output,
To meet voltage regulation requirement.The regulation photo-voltaic power generation station dynamic reactive response time should be not more than 30ms.
The test of dynamic reactive needs grid entry point electric voltage exception to increase or reduce as experiment condition, due to test device
Capacity be much smaller than large-scale photovoltaic plant capacity, testing ground can not simulating grid large disturbances operating mode, currently generally pass through electricity
Modeling method of standing assesses dynamic reactive electric current during low voltage crossing, but this method implementation steps are complicated, and assesses
As a result it is horizontal to rely on evaluation and test mechanism technology for precision.For under accidental conditions, scope range of the fluctuation of voltage 10%UnWithin when, need
Want a kind of assessment of test method simple to operation to photo-voltaic power generation station dynamic reactive response performance, correct response photovoltaic plant
True dynamic reactive enabling capabilities.
Invention content：
The object of the present invention is to provide a kind of on-the-spot test method of photovoltaic plant dynamic reactive response performance, the methods
When solving photovoltaic plant dynamic reactive response measurement, test device capacity is limited and modeling test method is excessively complicated asks
Topic, perfect current photovoltaic plant station level reactive response aptitude tests method system.
To achieve the above object, the present invention uses following technical scheme：A kind of photovoltaic plant dynamic reactive response performance
On-the-spot test method, the photovoltaic plant include reactive power compensator and photovoltaic DC-to-AC converter；Its test point is selected in photovoltaic electric
At grid entry point of standing；Busbar voltage variation is realized by adjusting main transformer tap in the photovoltaic plant；The method includes following steps
Suddenly：
(1) the photovoltaic plant active power output and reactive power output are measured；Confirm that detection device and control room are same
Step；
(2) adjustment has load transformer tapping so that grid entry point voltage should meet 12325 voltage deviation requirements of GB/T；
(3) the current plant active power of output that record test illumination is maintained at 400 watts/square metre is P0；
(4) setting photovoltaic plant is operated under terminal voltage control mode；
(5) adjusting has load transformer tapping, observes the idle action in power station；
(6) test terminates, and preserves data；
(7) test result is analyzed, photovoltaic plant dynamic response performance index is calculated.
A kind of on-the-spot test method of photovoltaic plant dynamic reactive response performance provided by the invention, the step (1) are logical
It crosses in the photovoltaic plant secondary side access power detection device, measures the output of power station active power and reactive power output.
A kind of on-the-spot test method of photovoltaic plant dynamic reactive response performance provided by the invention, checks respectively for electric energy matter
It is whether consistent with Control of Power Plant room with the voltage of power analyzer, electric current, active power and reactive power to measure analyzer；Check institute
Whether the time for stating power detection device is synchronous with the holding of Control of Power Plant room.
Another a kind of preferred on-the-spot test method of photovoltaic plant dynamic reactive response performance provided by the invention, it is described
Transformer tapping is adjusted to centre position by step (2).
Another a kind of preferred on-the-spot test method of photovoltaic plant dynamic reactive response performance provided by the invention, passes through
10kV or 6kV voltage class is accessed to the photo-voltaic power generation station of public electric wire net, grid entry point voltage deviation is corresponding electric system mark
Claim ± the 7% of voltage；
By the way that 35kV~110kV voltage class to be accessed to the photo-voltaic power generation station of public electric wire net, grid entry point voltage deviation is
- 3%~+the 7% of corresponding electric system nominal voltage；Restore ± 10% that voltage is electric system nominal voltage after accident；
By the way that 220kV voltage class to be accessed to the photo-voltaic power generation station of public electric wire net, grid entry point voltage deviation is corresponding electricity
0%~+the 10% of Force system nominal voltage；Restore -5%~+10% that voltage is electric system nominal voltage after accident；
By the way that 330kV and above to access to the photo-voltaic power generation station of public electric wire net, under normal operating mode, simultaneously
Site highest operating voltage must not exceed+the 110% of electric system nominal voltage；It is same that minimum operation voltage does not influence electric system
Walk the adjusting of stabilization, voltage stabilization, the normal use of station service and next step voltage.
Another a kind of preferred on-the-spot test method of photovoltaic plant dynamic reactive response performance provided by the invention, in institute
It states in the test in step (3), does not limit the reactive power pace of change of photo-voltaic power generation station；Ensure to concentrate at reactive power compensator
In normal operating condition, the output reactive powers of all photovoltaic DC-to-AC converters is close to 0.
Another a kind of preferred on-the-spot test method of photovoltaic plant dynamic reactive response performance provided by the invention, it is described
Step (4) is operated in by power station AVC default photovoltaic plants under terminal voltage control mode, and definition action threshold value bound ±
U%, i.e. virtual voltage absolute value of the bias | Δ U% |>± | U% | when AVC systems will carry out voltage adjusting, until | Δ U% |<±
| U% |.It is general to set voltage operation threshold value ± U% when experiment<(2~4) × step-length voltage regulating Utap%.Wherein, step-length voltage regulating
Utap% is to have to carry the percentage that tapped transformer changes voltage change after level-one.Voltage sends out reversed maximum idle work(after crossing the border
Rate Qmax, inhibit voltage fluctuation.
Another a kind of preferred on-the-spot test method of photovoltaic plant dynamic reactive response performance provided by the invention, it is described
Load transformer tapping is had according to the voltage regulation curve of photovoltaic plant, adjusting in step (5), increases grid entry point voltage step by step to electricity
Grid entry point of standing voltage is disturbed, and after observing the idle action in power station, is restored on-load regulator transformer tap and is extremely tested initially
Centre position；Grid entry point voltage is reduced step by step to disturb electric station grid connection point voltage, after observing the idle action in power station, is restored
Tap is to testing initial centre position.
Another a kind of preferred on-the-spot test method of photovoltaic plant dynamic reactive response performance provided by the invention, it is described
Test terminates in step (6), restores voltage tap position, and photovoltaic plant restores normal operating condition, preserves instrument test data,
Remove instrument wiring.
Another a kind of preferred on-the-spot test method of photovoltaic plant dynamic reactive response performance provided by the invention, it is described
Index in step (7) includes：When the photovoltaic plant sends out lagging reactive power, dynamic reactive electric current settling time Δ t1L、
Dynamic reactive current-responsive time Δ t2L；When the photovoltaic plant sends out capacitive reactive power, dynamic reactive electric current settling time
Δt1C, dynamic reactive current-responsive time Δ t2C, lagging reactive power response and capacitive reactive power response
Another a kind of preferred on-the-spot test method of photovoltaic plant dynamic reactive response performance provided by the invention：
The dynamic reactive electric current settling time Δ t1LIt is determined by following formula：
Δt1L=| t1L-t0L| (1)
Wherein, t1LIt is more than adjustment 10% moment of desired value for voltage change absolute value, is denoted as voltage change initial time；
t0L90% moment of steady-state value is reached for reactive current, is denoted as response finish time；
The dynamic reactive electric current settling time Δ t1CIt is determined by following formula：
Δt1C=| t1C-t0C| (2)
Wherein, t1CIt is more than adjustment 10% moment of desired value for voltage change absolute value, is denoted as voltage change initial time；
t0C90% moment of steady-state value is reached for reactive current, is denoted as response finish time；
The dynamic reactive current-responsive time Δ t2LIt is determined by following formula：
Δt2L=| t2L-t0L| (3)
Wherein, t2LIt is more than adjustment 10% moment of desired value for voltage change absolute value, is denoted as voltage change initial time；
The dynamic reactive current-responsive time Δ t2CIt is determined by following formula：
Δt2C=| t2C-t0C| (4)
Wherein, t2CIt is more than adjustment 10% moment of desired value for voltage change absolute value, is denoted as voltage change initial time；
Perception or capacitive reactive power response are the idle output valve Q in power station and AVC set target values after reaching stable state
The ratio of Qset.
With immediate prior art ratio, the present invention, which provides technical solution, has following excellent effect
1, method of the invention is adjusted by using the tap that station level on-load voltage regulation becomes and power station AVC response lags adjust in fact
Existing power station outlet side voltage fluctuation；
2, method of the invention monitoring power station concentrates the dynamic reactive responding ability of reactive-load compensation and inverter and according to mark
Standard is evaluated；
3, when method of the invention solves photovoltaic plant dynamic reactive response measurement, test device capacity is limited and builds
The excessively complicated problem of mould test method；
4, the perfect current photovoltaic plant station level reactive response aptitude tests method system of of the invention method.
Description of the drawings
Fig. 1 is the photovoltaic plant powerless control system block diagram of the present invention；
Fig. 2 is that the photovoltaic plant dynamic reactive of the present invention tests point diagram；
Fig. 3 is the photovoltaic plant voltage regulation curve figure of the present invention；
Fig. 4 is the reactive power dynamic response determining method schematic diagram of the present invention；
Fig. 5 is certain concentration access type 30MW voltages, reactive current trend chart of the present invention；
Fig. 6 is certain concentration access type 30MW voltages, reactive current trend chart of the present invention；
Fig. 7 is certain concentration access type 30MW active power of the present invention, reactive power response characteristic figure；
Fig. 8 is certain concentration access type 30MW capacitives dynamic electric voltage, reactive current virtual value figure of the present invention.
Specific implementation mode
With reference to embodiment, the invention will be described in further detail.
Embodiment 1：
As shown in figures 1-8, the invention of this example provides the on-the-spot test method of photovoltaic plant dynamic reactive response performance；It surveys
Pilot should be selected at photovoltaic electric station grid connection point, and interior busbar voltage variation of standing realizes that range of regulation is by adjusting main transformer tap
± N grades, step-length voltage regulating Utap%.
Steps are as follows for test method
(1) according to attached drawing 2, in power station secondary side access power detection device, power station active power output and idle is measured
Power output；Check power quality analyzer and power analyzer voltage, electric current, active power and reactive power whether and
Control of Power Plant room is consistent；Check whether the time of power detection device is synchronous with the holding of Control of Power Plant room.
(2) adjustment has load transformer tapping, transformer tapping is adjusted to centre position, grid entry point voltage should meet at this time
The requirement of 12325 voltage deviations of GB/T：
The photo-voltaic power generation station of public electric wire net is accessed by 10 (6) kV voltage class, grid entry point voltage deviation is corresponding system
± the 7% of system nominal voltage.
The photo-voltaic power generation station of public electric wire net is accessed by 35kV~110kV voltage class, grid entry point voltage deviation is phase
Answer -3%~+the 7% of nominal voltage of a system；Restore ± 10% that voltage is nominal voltage of a system after accident.
The photo-voltaic power generation station of public electric wire net is accessed by 220kV voltage class, grid entry point voltage deviation is corresponding system
0%~+the 10% of nominal voltage；Restore -5%~+10% that voltage is nominal voltage of a system after accident.
Access the photo-voltaic power generation station of public electric wire net by 330kV and above, under normal operating mode, simultaneously
Site highest operating voltage must not exceed+the 110% of nominal voltage of a system；Minimum operation voltage should not influence electric system synchronization
The adjusting of stabilization, voltage stabilization, the normal use of station service and next step voltage.
(3) illumination should be maintained at 400W/m when testing2More than；The record current active power of output in power station is P0；Do not limit light
Lie prostrate the reactive power pace of change in power station；Ensure that reactive power compensator is concentrated to be in normal operating condition, all inverters are defeated
Go out reactive power close to 0.
(4) be operated under terminal voltage control mode by power station AVC default photovoltaic plants, voltage operation threshold value be ±
U%<(2~4) × Utap%, voltage send out reversed maximum reactive power Q after crossing the bordermax, inhibit voltage fluctuation；
(5) according to voltage curve shown in attached drawing 3, adjusting has load transformer tapping, increases grid entry point voltage step by step to power station
Grid entry point voltage is disturbed, and after observing the idle action in power station, restores on-load regulator transformer tap into testing initially
Between position；Grid entry point voltage is reduced step by step to disturb electric station grid connection point voltage, after observing the idle action in power station, restores to take out
Head is to testing initial centre position.
(6) test terminates, and restores voltage tap position, and normal operating condition is restored in power station, preserves instrument test data, tears open
Except instrument wiring.
(7) test result is analyzed, photovoltaic plant dynamic response performance index is calculated：When sending out inductive reactive power, dynamic reactive
Electric current settling time Δ t1L, dynamic reactive current-responsive time Δ t2L；When sending out capacitive reactive power, when dynamic reactive electric current is established
Between Δ t1C, dynamic reactive current-responsive time Δ t2C, lagging reactive power response, capacitive reactive power response.
The dynamic reactive electric current settling time Δ t1LIt is determined by following formula：
Δt1L=| t1L-t0L| (1)
Wherein, t1LIt is more than adjustment 10% moment of desired value for voltage change absolute value, is denoted as voltage change initial time；
t0L90% moment of steady-state value is reached for reactive current, is denoted as response finish time；
The dynamic reactive electric current settling time Δ t1CIt is determined by following formula：
Δt1C=| t1C-t0C| (2)
Wherein, t1CIt is more than adjustment 10% moment of desired value for voltage change absolute value, is denoted as voltage change initial time；
t0C90% moment of steady-state value is reached for reactive current, is denoted as response finish time；
The dynamic reactive current-responsive time Δ t2LIt is determined by following formula：
Δt2L=| t2L-t0L| (3)
Wherein, t2LIt is more than adjustment 10% moment of desired value for voltage change absolute value, is denoted as voltage change initial time；
The dynamic reactive current-responsive time Δ t2CIt is determined by following formula：
Δt2C=| t2C-t0C| (4)
Wherein, t2CIt is more than adjustment 10% moment of desired value for voltage change absolute value, is denoted as voltage change initial time；
Perception/capacitive reactive power response is the idle output valve Q in power station and AVC set target values Q after reaching stable stateset
Ratio.
In Fig. 4, Iq1For photovoltaic plant reactive current initial launch value；Iq2For photovoltaic plant reactive current dynamic response width
Value；Iq is photovoltaic plant dynamic reactive current-responsive amplitude；
In order to analyze the influence that different time length is distributed test result, below with certain concentration access type 30MW dynamic nothing
For work(test result.As seen in figs. 5-6, inductive reactive power setting value is 8Mvar to perceptual dynamic reactive test result.
By calculating, inductive reactive power performance criteria of the response is as shown in table 1：
Power station changed power trend after 1 voltage of table restores
Test results are shown in figure 8 for capacitive dynamic reactive, and inductive reactive power setting value is 4Mvar.By calculating, capacitive reactive power
Performance criteria of the response is as shown in table 1：
Power station changed power trend after 2 voltage of table restores
Method described in application, test result is as follows for the power station dynamic reactive：
When power station sends out lagging reactive power, power station dynamic reactive electric current settling time Δ t1L is 40ms, dynamic reactive
Electric current dynamic response time Δ t2L is 1920ms；When power station sends out capacitive reactive power, dynamic reactive electric current settling time Δ
T1C is 90ms, and dynamic reactive electric current dynamic response time Δ t2C is 2520ms.Lagging reactive power response 93%Qset, hold
Property reactive power response 67.2%Qset。
Finally it should be noted that：The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, institute
The those of ordinary skill in category field with reference to above-described embodiment although should understand that：It still can be to the specific implementation mode of the present invention
It is modified or replaced equivalently, these are without departing from any modification of spirit and scope of the invention or equivalent replacement, in Shen
Within the claims of the present invention that please be pending.
Claims (10)
1. a kind of on-the-spot test method of photovoltaic plant dynamic reactive response performance, the photovoltaic plant includes reactive power compensator
And photovoltaic DC-to-AC converter；It is characterized in that：Its test point is selected at photovoltaic electric station grid connection point；Busbar voltage in the photovoltaic plant
Variation is realized by adjusting main transformer tap；It the described method comprises the following steps：
(1) the photovoltaic plant active power output and reactive power output are measured；Confirm that detection device is synchronous with control room；
(2) adjustment has load transformer tapping so that grid entry point voltage should meet 12325 voltage deviation requirements of GB/T；
(3) the current plant active power of output that record test illumination is maintained at 400 watts/square metre is P0；
(4) setting photovoltaic plant is operated under terminal voltage control mode；
(5) adjusting has load transformer tapping, observes the idle action in power station；
(6) test terminates, and preserves data；
(7) test result is analyzed, photovoltaic plant dynamic response performance index is calculated；
Index in the step (7) includes：When the photovoltaic plant sends out lagging reactive power, when dynamic reactive electric current is established
Between Δ t1L, dynamic reactive current-responsive time Δ t2L；When the photovoltaic plant sends out capacitive reactive power, dynamic reactive electric current
Settling time Δ t1C, dynamic reactive current-responsive time Δ t2C, lagging reactive power response and capacitive reactive power response
Value.
2. a kind of on-the-spot test method of photovoltaic plant dynamic reactive response performance as described in claim 1, it is characterised in that：
The step (1) is by the photovoltaic plant secondary side access power detection device, measuring the output of power station active power and nothing
Work(power output.
3. a kind of on-the-spot test method of photovoltaic plant dynamic reactive response performance as claimed in claim 2, it is characterised in that：
Whether voltage, electric current, active power and the reactive power for checking respectively for power quality analyzer and power analyzer are controlled with power station
Room processed is consistent；Check whether the time of the power detection device is synchronous with the holding of Control of Power Plant room.
4. a kind of on-the-spot test method of photovoltaic plant dynamic reactive response performance as described in claim 1, it is characterised in that：
Transformer tapping is adjusted to centre position by the step (2).
5. a kind of on-the-spot test method of photovoltaic plant dynamic reactive response performance as claimed in claim 4, it is characterised in that：
The photo-voltaic power generation station of public electric wire net is accessed by 10kv or 6kv voltage class, grid entry point voltage deviation is corresponding electric system
± the 7% of nominal voltage；
By the way that 35kV~110kV voltage class to be accessed to the photo-voltaic power generation station of public electric wire net, grid entry point voltage deviation is corresponding
- 3%~+the 7% of electric system nominal voltage；Restore ± 10% that voltage is electric system nominal voltage after accident；Passing through will
220kV voltage class accesses the photo-voltaic power generation station of public electric wire net, and grid entry point voltage deviation is corresponding electric system nominal voltage
0%~+10%；Restore -5%~+10% that voltage is electric system nominal voltage after accident；By by 330kV or more
Voltage class accesses the photo-voltaic power generation station of public electric wire net, and under normal operating mode, grid entry point highest operating voltage must not exceed
+ the 110% of electric system nominal voltage；Minimum operation voltage does not influence electric system synchronism stability, voltage stabilization, station service
The adjusting of normal use and next step voltage.
6. a kind of on-the-spot test method of photovoltaic plant dynamic reactive response performance as described in claim 1, it is characterised in that：
In test in the step (3), the reactive power pace of change of photo-voltaic power generation station is not limited；Ensure to concentrate reactive-load compensation dress
It sets and is in normal operating condition, the output reactive powers of all photovoltaic DC-to-AC converters is close to 0.
7. a kind of on-the-spot test method of photovoltaic plant dynamic reactive response performance as described in claim 1, it is characterised in that：
The step (4) is operated in by power station AVC default photovoltaic plants under terminal voltage control mode, voltage operation threshold value be ±
U%<(2~4) × step-length voltage regulating Utap%, voltage send out reversed maximum reactive power Q after crossing the bordermax, inhibit voltage fluctuation.
8. a kind of on-the-spot test method of photovoltaic plant dynamic reactive response performance as described in claim 1, it is characterised in that：
Load transformer tapping is had according to the voltage regulation curve of photovoltaic plant, adjusting in the step (5), increases grid entry point voltage step by step
Electric station grid connection point voltage is disturbed, after observing the idle action in power station, it is first to testing to restore on-load regulator transformer tap
The centre position of beginning；Grid entry point voltage is reduced step by step to disturb electric station grid connection point voltage, after observing the idle action in power station,
Restore tap to testing initial centre position.
9. a kind of on-the-spot test method of photovoltaic plant dynamic reactive response performance as described in claim 1, it is characterised in that：
Test terminates in the step (6), restores voltage tap position, and photovoltaic plant restores normal operating condition, preserves instrument test
Data remove instrument wiring.
10. a kind of on-the-spot test method of photovoltaic plant dynamic reactive response performance as described in claim 1, feature exist
In：
The dynamic reactive electric current settling time Δ t1LIt is determined by following formula：
Δt1L=| t1L-t0L| (1)
Wherein, t1LVoltage change absolute value when being established for electric current is more than adjustment 10% moment of desired value, is denoted as voltage change and rises
Begin the moment；t0L90% moment of steady-state value is reached for reactive current, is denoted as response finish time；
The dynamic reactive electric current settling time Δ t1CIt is determined by following formula：
Δt1C=| t1C-t0C| (2)
Wherein, t1CVoltage change absolute value is more than adjustment 10% moment of desired value when being established for electric current, is denoted as voltage change starting
Moment；t0C90% moment of steady-state value is reached for reactive current, is denoted as response finish time；
The dynamic reactive current-responsive time Δ t2LIt is determined by following formula：
Δt2L=| t2L-t0L| (3)
Wherein, t2LFor current-responsive when voltage change absolute value be more than adjustment 10% moment of desired value, be denoted as voltage change starting
Moment；
The dynamic reactive current-responsive time Δ t2CIt is determined by following formula：
Δt2C=| t2C-t0C| (4)
Wherein, t2CFor current-responsive when voltage change absolute value be more than adjustment 10% moment of desired value, be denoted as voltage change starting
Moment；
Perception or capacitive reactive power response are the idle output valve Q in power station and AVC set target values Qset after reaching stable state
Ratio.
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| CN105445580A (en) * | 2015-11-18 | 2016-03-30 | 中国电力科学研究院 | Test method of reactive power compensation device response time |
| CN105445539B (en) * | 2015-11-24 | 2021-04-30 | 中国电力科学研究院 | Method and system for testing dynamic reactive performance of photovoltaic power station |
| CN105811426B (en) * | 2015-12-24 | 2018-09-14 | 国网甘肃省电力公司电力科学研究院 | A kind of photovoltaic combining inverter is idle to go out force control method |
| CN106026166B (en) * | 2016-06-24 | 2021-10-29 | 中国电力科学研究院 | Reactive capacity detection method for new energy power station accessed to weak power grid |
| CN106712041B (en) * | 2016-12-14 | 2019-06-07 | 云南电网有限责任公司电力科学研究院 | 220kV collects the step voltage control method for coordinating up and down of substation |
| CN110034584B (en) * | 2019-04-30 | 2022-06-03 | 东南大学溧阳研究院 | Photovoltaic power station self-adaptive reactive voltage control method considering reactive power abundance |
| CN110266012A (en) * | 2019-05-29 | 2019-09-20 | 华电电力科学研究院有限公司 | A kind of photovoltaic plant dynamic reactive response time test method |
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